Roof structures for the garage are of several types. In order to choose the optimal one, you need to familiarize yourself with the specific features of each of them. So, different options are mounted differently.
Peculiarities
A roof for a garage is very different from a roof for a house. This is due not only to the fact that the garage is used as an additional utility facility, but also to the fact that there is no need for such high-quality thermal insulation. Therefore, roofs are covered with inexpensive materials that do not cause difficulties during their installation.
A specific feature of the garage roof is that its shape and design is selected relative to the location of the garage house. In addition, it is determined by the stylistic coloring of the facade of the main house, as well as the surrounding landscape. However, it must be remembered that there should not be any special frills here, because the garage is still not the main building, and in theory it should not attract too much attention to itself.
Due to the simplicity of the design, roofs for a garage will not cost much. This is due to the cheapness of the material and repair work. Due to the ease of installation, construction work will cost a little. Thanks to the same feature, installation can be done independently, without the involvement of specialists.
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Such high-quality insulation is not required, so this side part can be easily abandoned.
Kinds
It cannot be said that the garage roof is represented by a wide variety of types. Simplicity and functionality are the fundamental principles in accordance with which the choice is made in favor of a particular design. This is the reason for such a poor choice.
The choice in favor of one or another type is made on the basis of several factors. Firstly, the climatic zone in which the garage is being built is important. How windy the area is, how much precipitation falls here, directly affects the choice of design and roof slope. Secondly, again, overall harmony is important. Much better if the roof of the garage is similar to that of the house. Thirdly, the chosen material plays a role. Some types look good only on roofs with one slope, others - with two.
Before choosing one or another type, it is necessary to analyze the situation with the construction of the garage. First of all, you need to know:
- the climate in which the garage building will be located;
- whether the garage will be adjacent to the house or separate;
- from what material the roof is laid;
- roof height above ground level.
By answering each of the questions posed, you will be able to choose the best option that is suitable in a particular case.
Each of the types of roofs has its own subtypes, which are also worth keeping in mind. The use of one or another subtype is determined depending on the area of \u200b\u200bthe roofing. Thus, it turns out to prevent the collapse of the roof, its subsidence under the weight of precipitation, and the load on the foundation is also regulated.
flat
A roof with a slope of up to 3 degrees is flat. Compared to pitched roofs, it has several advantages:
- a flat roof takes up much less space than a pitched roof, which results in savings on materials for its manufacture;
- a flat roof can be built much faster than a pitched one, since it does not require complex calculations regarding the truss system;
- repairing a flat structure is much easier and safer due to the fact that the risk of falling down is reduced by rolling down a steeply sloping surface;
- if the garage is attached to the house, then such a roof can be converted into a balcony or used as a terrace on the second floor.
However, flat roofs are not suitable for areas with high winds and high rainfall, as they may collapse and collapse under the weight of the snow. This is also due to the fact that such a roof will have to be periodically cleaned of snow and icy crust.
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To drain water from such roofs, it is often necessary to organize additional drain channels. The tightness of the roof is at risk: this must be constantly monitored, carrying out preventive work every year.
low-slope
Low-slope pitched roofs are considered a universal solution. They are suitable for areas with an average climate. The garage may not be located in the city, but it should not stand in the steppe windy space. The slope angle of low-slope structures varies from 3 to 30 degrees. The advantages of such roofs are some features, which will be discussed later. The peculiarity is that the slope for each specific case is determined by calculations, while the minimum allowable value is selected. Calculations are made based on the roofing material.
When building roofs with a low slope, it will be necessary to take into account several specific features:
- The need for equipment of a drainage system of an internal or external type.
- The roof must have good tightness.
- The need for a ventilation gap under the roof. Its size is determined according to the angle of inclination: the flatter the roof, the greater the gap.
Thus, opting for a low-slope roof guarantees savings in materials, but you will have to spend much more effort and money on the structure itself. Make sure that the choice of a low slope is justified in terms of aesthetic appeal.
Steep
The slope angle of steep roofs starts at 30 degrees. As with other options, this variety has both pros and cons. It is necessary to use roofs with a steep slope in cases where the garage is located on calm sites (for example, in urban areas). If there is a lot of snow in the area, then such a roof will allow you not to waste time cleaning it, because the snow will not linger on it, rolling down steep surfaces.
This option is completely unacceptable for windy areas. So, the roof can easily be blown away by a strong gust of wind. If the area is calm and there is little rainfall, then the cost of such construction will not be justified.
Thus, the choice of one or another variety is primarily due to the location of the garage and the site as a whole.
For steppe windy deserts, it is best to choose flat or low-slope roofs, for wooded areas, low-slope options are best, and for urban areas with high rainfall, a steeply sloping variety will be the best choice.
However, roofs are divided not only by the angle of inclination. There is another classification of roofs - by the number of slopes. For garages, only two varieties are used: single-slope and dual-slope.
Shed
Shed roofing is valued for its simplicity and functionality.
- Firstly, its installation takes really less time than the construction of a gable version.
- Secondly, it will not be difficult to make all the calculations for the required amount of material. This step can be taken independently, and the accuracy of the calculations will not be in doubt.
- Thirdly, the material for such a roof takes much less than for a gable structure of the same area.
- Fourth, a shed roof is a great option if you need to arrange a garage attached to the house. She looks the most harmonious.
- Fifth, it is believed that shed roofs are more durable than gable ones. In addition, they are more reliable and strong, and thanks to timely repairs, they can last up to 50 years.
Shed structures are not without drawbacks.
- Due to the fact that in most cases single-sided options are flat, the load on them increases in the winter. Snow does not roll by itself, and you either have to clean it yourself or rely on the roof to hold up.
- With a shed version, you will definitely have to abandon the attic, even if initially a small attic room was still planned.
- This variety is more difficult to equip with decent thermal insulation.
- Many people notice that the shed construction looks rustic against the background of the expressive gable, and in some cases this causes certain inconvenience to the owners.
gable
A gable roof is more often used for garages that stand separately. Seeing her on a structure attached to the house is a rarity. Nevertheless, dual-slope options have their own advantages.
- Thanks to its special shape, snow and rain do not linger on such a roof. They roll down instead of making the structure heavier.
- Although a gable roof is more complex than a single-pitched roof, you can make a garage version yourself if you take into account some amendments.
- By choosing the elementary option, you can significantly save on work, because you will be able to complete them alone, maximum with a partner.
- The gable design allows you to equip it with good thermal insulation, thereby achieving a reduction in heat loss. So, when planning a warm garage, other roofing options cannot be considered.
- The gable roof allows you to organize a small attic where you can store tools and other equipment. In cases where a hinged gable structure is chosen, it turns out to increase the height of the ceiling.
After evaluating exactly how you want to see your garage in the end, you can easily choose the type of roof structure for it.
materials
Roofing materials are not only those that are on the outside. For the internal construction, their types are also used. If the rafters can be made from a wooden beam, then several materials are suitable for waterproofing at once. Most often, roll insulators are used for this, for example, bikrost, roofing material, roofing felt. Instead, you can use bituminous mastic, which will reliably protect the roof from water penetration.
But it is also important not to buy too expensive materials for sheathing the garage roof. For example, a garage roof lined with ceramic tiles will look strange and out of place. If the roof of the main house is finished with such an elite material, it would still be better for the garage to choose a cheap equivalent. This will show both the good taste of the owner and his practicality, allowing significant savings.
For the internal wooden structure, there is also an analogue - a concrete frame. It should be borne in mind that concrete is much heavier than wood, the load on the foundation of the structure will increase greatly. In this regard, before choosing such an alternative, it is necessary to make sure that the strength of the structure is sufficient.
Decking
One of the most common materials used to cover the garage roof is corrugated board. This type is so often used due to a number of advantages, including a large selection of colors, price, ease of installation. In addition, the corrugated board is durable. If laid properly, a durable, aesthetically pleasing finish is guaranteed.
Roof decking differs in the height of the corrugations, the width of the sheets themselves and the type of galvanized steel that is used in production. The material of the HC category belongs to the roofing class, therefore, when choosing, you must definitely look for just such a marking. Pay attention to the presence of the GOST mark. If it is not there, this means that other standards were taken as a sample during production, or there were no standards at all. From this we can conclude that corrugated board without such an icon is not always of high quality.
For roofing, it is necessary to choose profiled sheets with a polymer coating. Polyvinyl dichloride, pural and polyester are considered suitable. The first is the most durable sample, but its cost is somewhat higher, but the other options are cheaper, but less wear-resistant.
Slate
Gray dull slate material has long become a classic of the genre, and when it comes to slate, everyone imagines just such roofs. Despite the unattractive appearance, slate has excellent strength characteristics. If you choose a quality sample produced in accordance with modern technologies, it can easily last up to 50 years.
- Slate is made from different types of raw materials. Plastic, asbestos-cement, soft, rubber and metal are used. Each of these subcategories has its own characteristics and advantages.
- For example, the asbestos-containing version has excellent technical performance and low cost, but asbestos is toxic, and this type of slate is unhealthy.
- Soft slate does not have frost resistance, but it is strong, durable and at the same time flexible.
- Plastic slate lasts up to 15 years without loss of strength, but it must be mounted carefully, given that it tends to shrink or expand depending on temperature changes.
Now there is a wide variety of decorative solutions on the market, and you can pick up slate material of any color.
"Ondulin"
The name of the company Ondulin has long been a household name, which is used to refer to roofing sheets that imitate other materials. Three types are the most popular.
- smart. The material has a small mass, as a result of which it is possible to carry out installation alone, without the help of a partner. Due to the optimal size of the sheets and their small thickness of only 3 mm, it is possible to completely sheathe the roof of the garage in one day. It will take a lot of nails. And also when working with Smart material, the joints will need to be covered with additional decorative elements.
- DIY. This variety is more rigid than the previous one. This is due to the fact that the waves here are more frequent and higher. The mass of the material remains the same. So, such options are more suitable for roofs of complex architecture, and not for elementary garage structures. The material is overlapped, due to which its consumption increases.
- "Tile". Finishing with this type of sheet is indistinguishable from finishing with metal tiles, but it is much easier to implement than laying out a real tiled roof. A wide variety of color options is presented, and there are not only plain roofs, but also spotted ones.
Falz
Steel roofs raise more questions than anything else.
- First, they are not strong enough. Any strong mechanical damage will easily warp too flexible material.
- Secondly, steel does not hold temperature at all, as a result of which it will be necessary to take additional care of the heat-insulating layer.
- Thirdly, waterproofing is also not up to standard: the roof can easily start to leak, endangering the safety of your car. You will need to additionally seal the roof.
However, seam steel floors are distinguished by several significant advantages. In the first place is the price: it is an order of magnitude lower than the cost of other options. Repairing this roof is also easy, since the panels are fastened to each other by means of ordinary tucks. The roof can be covered with this material even in winter. Due to its flexibility, steel is excellent for winter installation. So, because of all this, seam roofing is confidently kept in the list of the most popular among all materials for decorating side buildings.
Ruberoid
Roofing material is laid on a continuous crate. Its advantage is that it is sold in rolls, and there will be no difficulties with installation. However, there are several pitfalls here as well.
- It should be borne in mind that the material consumption will be impressive. The roofing material is laid in three layers, which are smeared with bituminous mastic for better thermal and waterproofing.
- The service life of the material is 15 years, after which it will need to be dismantled.
- The material is mainly used for finishing flat roofs. Roofing material coating cannot be called aesthetically attractive: when pitched roofs are sheathed with it, they are additionally covered from above with some material with better decorative properties.
Roofing felt is produced in four main categories, which differ in the type of base.
- Rubemast gives the coating durability due to the fact that it is more flexible, less prone to cracking.
- Stekloruberoid or steklomast has characteristics similar to rubemast, however, it is based on fiberglass, and not on building cardboard.
- Tol is practically not produced, since it lags far behind in quality, but in terms of manufacturing price it is on a par with other types.
- Euroruberoid has a complex structure. This material is the newest of all, and its qualities are far superior to those of traditional roofing felts.
Polycarbonate
This variety is of the greatest interest due to its unusual appearance. The peculiarity of polycarbonate roofs is that they are transparent. Depending on which type of polycarbonate is selected, the degree of transparency varies. So, the surface can be from slightly hazy to almost opaque. By structure, monolithic and cellular polycarbonate plates are distinguished. The first option is cheaper, but the second does not require additional arrangement of thermal insulation.
Polycarbonate is resistant to all kinds of influences, both physical and chemical. It is non-flammable, so it can be classified as a fireproof material.
However, it should be borne in mind that if you plan to make a warm garage, polycarbonate will not work. Due to the arrangement of additional thermal insulation, all its decorative qualities will be lost, and the result will not please as much as it could. If you need a warm garage, then it is better to make a roof from a cheaper material.
slope angle
The device of the roof involves carrying out complex calculations, including the lifting of the roof. Regardless of whether a gable or single-slope design is chosen, lifting is mandatory. The only exceptions are flat roofs, but there is always a slight slope of a couple of degrees.
The height to which the roof must be raised is determined by many factors. An important detail is how exactly the slope will be located. note that optimally position the ramp on the windward side. It does not matter whether the garage will be closed from the wind by other structures or a fence - this rule is immutable.
One can only envy those car owners who have or got the opportunity to build their own real garage. Knowing the mentality of our men, it can be stated with a high degree of certainty that the vast majority of "lucky ones" will start building a "house" for their car with their own hands. Nowadays, there are many opportunities for choosing materials for building a garage - both from the standpoint of ease of self-construction, and from the point of view of maximum efficiency.
Any building is always crowned with a roof, and if, again, we focus on minimal costs, then its shed design becomes the best option. In addition, the problems of some special decorative effect, as a rule, recede into the background, giving way to the reliability of the design and the speed of its installation. It is precisely these qualities that the mentioned option possesses. So, a shed roof for: from carrying out the necessary calculations to installation features - in this publication.
What are the advantages of a shed roof, are there any disadvantages?
So, in most cases, a garage is considered precisely as an auxiliary technical room, therefore, in its design and construction, a utilitarian approach usually dominates - simplicity, reliability, and the creation of effective protection for the car from atmospheric precipitation. That is why shed roofs are so popular in this case.
- This design is simple for independent calculations. It is based on a triangle - the most "rigid" of all two-dimensional figures, which is described by simple and understandable geometric relationships.
- The cost of materials and components is always significantly lower than for even the simplest gable roof. It is important that saving lumber in this case does not in any way affect the reliability of the structure.
- Installation of a shed roofing system is simple and intuitive. For the independent construction of such a structure, it is not at all necessary to be a qualified craftsman - subject to technological recommendations, any garage owner can handle such a task. This is another "plus" in terms of cost-effectiveness of construction - there is no need to resort to hiring specialists.
- Another advantage is the speed of work. You can cover the garage with a shed roof in a matter of days, while choosing a more complex truss system and time will take much more.
True, the owner of the garage, when choosing a pitched roof, will have to come to terms with some of its shortcomings:
- A shed roof is more susceptible to snow load - due to a slight slope, snowdrifts can form on its surface. This must be taken into account when making calculations.
- Such a design either does not imply an attic at all, or its operational capabilities will be significantly limited.
- There are certain difficulties in ensuring high-quality thermal insulation of such a garage, especially if the project does not involve at least a small attic space.
- Finally, not everyone likes the appearance of a shed roof, which does not involve any decorative frills. However, this is a matter of taste, and if desired, a pitched roof can be entered into the general "architectural ensemble" of one's country estates. For many, this disadvantage is not significant at all.
Shed roof garage options
The shed roof system is a series of stacked parallel to each other, arranged in such a way that one of their ends is raised relative to the other to a certain height to create a slope. The rafters become the basis for the installation of the necessary lathing, and already she, in turn, for the flooring of the selected roofing.
The excess of one edge of the rafters on the other can be provided in several ways:
- Even in the process of designing a garage, one of the walls is planned to be higher than the opposite, by an amount (the calculation of such an excess will be discussed below). The other two walls in this case are given the shape of a trapezoid.
This approach is very often practiced in frame construction. Even when drawing up the drawings, it is envisaged that the height of the supporting vertical racks of the frame on one side will be higher. Thus, at different heights, in compliance with the required ΔН, there will also be bars of the upper trim, which will play the role of a Mauerlat. As a result, a ready-made shed roof system is immediately laid, on which it remains only to mount the rafters, and then the desired crate.
Which walls will vary in height will, of course, depend on the chosen direction of the slope.
- It can be a cross slope, towards one of the sides of the garage. This method is attractive in that the rafters are shorter, and you can often get by with the simplest scheme, without creating additional supports for them.
- Another option is when the front wall of the building is higher than the back, and then the slope of the slope is organized back. The length of the built in this case, in relation to the garage, already reaches 5 ÷ 6 and even more meters, and one cannot do without their reinforcement.
- If, according to the project, both walls of the building are of the same height, or a shed roof is being erected on a previously constructed building, then you can organize the slope of the rafters by substituting racks of the same height ΔН under them on one side. Racks on top are usually combined with a strapping beam, which will begin to perform the function
In this case, the front part of the roof structure and the remaining open gable triangles after the installation of the truss system are simply sewn up with wood or other material, at your discretion.
This approach often allows you to achieve savings in the construction of the main walls of the garage - it will take less brick or blocks, and the laying process itself will go faster - there is no need to display additional side trapezoidal walls of the gables.
- If the walls are of the same height, then they resort to another method - they mount roof trusses on the "ground", and then install them with certain steps on the Mauerlat.
Usually in the course of work one such truss is made, carefully tried on and adjusted to the place. Well, then it becomes a template for "cloning" - the rest are made according to its model, in convenient conditions on earth. When all the farms are ready, they proceed to the final installation. The lower corners of the trusses are attached to the Mauerlat, the upper corners are tied together with a beam, creating a single rigid structure.
This approach is especially convenient when a large distance between the walls obliges the builder to strengthen the rafters. And the truss in itself is a rigid structural element, as it combines both a kind of floor beam and a rafter leg, with reinforcing jumpers installed between them - racks or struts.
Rafter mount
Another obvious convenience - in such a garage it will be much easier to hem the ceiling, if necessary, also insulate it - the horizontal beams of the trusses provide all the possibilities for this.
Another option is when the garage is attached to a finished solid wall of an already previously erected capital building.
In this case, one end of the rafters rests on brackets or a support beam installed on the wall at a certain height, and the other end rests on vertical racks with strapping - in the case of a frame structure, or on the Mauerlat of a nearby wall. In any case, this fulcrum is again located with the calculated height difference ΔН.
If necessary, instead of rafters, roof trusses can also be attached to the wall of the house, by analogy with the previously considered case.
The main parameters of the shed roof of the garage, their calculations
So, if a decision is made to build a shed roof over the garage, then it is necessary to determine its main parameters.
From the initial data, as a rule, there are only the dimensions of the "box" of the garage - its length and width. From here we will start to “dance”.
Roof slope direction
First of all, it is necessary to determine in advance the direction of the slope of the slope, guided not only by considerations of convenience and ease of installation of the truss system, but also taking into account the prevailing wind direction at the construction site.
The slope of the roof is recommended to be carried out precisely on the windward side, so that the movement of air does not create a lifting force, but, on the contrary, presses the roof structure down. Although the garage, as a rule, is a low structure, and can be almost completely buried from the effects of wind by other buildings, nevertheless, the predominance of the wind can be caused by the features of the terrain or neighboring buildings - open spaces, forest clearings, etc. And, of course, the specifics of the site can also play a certain role in choosing the direction of the slope - the general “background” of the design of the territory, the location of the elements of the storm sewer system, or other factors.
Determination of slope slope
The next step is to determine the steepness of the slope, that is, the angle α.
For shed roofs, this angle usually does not exceed 25, maximum - 30 °. With too much steepness, the structure itself looks ridiculous, and most importantly, the roof becomes very vulnerable to wind load. Too small slopes, less than 10 °, are also undesirable, since in this case the significance of the snow load on the slope increases sharply, the outflow of water becomes more difficult, especially during thaws or the beginning of massive snowmelt.
The slope angle is seriously affected by and. If the garage owner prefers one or another roofing material in advance, for example, in order to withstand the general design of the territory, then he must be guided by certain rules when calculating the steepness of a pitched roof.
Below is a diagram showing the acceptable types of roof coverings for various roof pitch angles.
Please note that the slope on the diagram is shown in three different versions - in degrees and in the ratio of the height of the lift (ΔH) to the base length (D or L), which, in turn, can be expressed as a fractional ratio or as a percentage. Having such a scheme at hand, it will not be difficult to convert one unit of measure to another.
The circled numbers indicate the types of roofing, and the arrow coming from them indicates the minimum allowable the amount of roof slope at which they can be used.
| Designation on the diagram | Permissible type of roofing |
|---|---|
| ① | Coating of shingles, wood chips, natural shingle. |
| ② | Natural piece tiles, slate and bitumen-polymer tiles. |
| ③ | Flat roof: at least four layers of bitumen-based roll coating, with an external dressing of fine gravel embedded in molten mastic. |
| ④ | The same, but three layers of material are enough with a mandatory sprinkle. |
| ⑤ | The same, but without the obligatory gravel backfill. |
| ⑥ | When using rolled material - two layers applied to the mastic in a "hot" way. It is allowed to use metal tiles or some types of corrugated board. |
| ⑦ | Asbestos-cement slate corrugated sheets of reinforced profile. |
| ⑧ | Clay tiles. |
| ⑨ | Sheets of flat slate reinforced pro |
| ⑩ | Sheet steel roofing, with seam connections of sheets. |
| ⑪ | Slate asbestos-cement wavy regular profile. |
How to give the ramp a given slope angle?
The next question is how to give the slope the desired angle of inclination.
If with a value α and we decided on the direction of the slope of the slope, then, knowing the initial parameter of the length or width of the garage (), it is easy to determine the required height difference ΔN, which has already been mentioned several times.
If the walls have a certain thickness (for example, they are made of blocks or bricks), then the measurement of the linear parameters of the building D and L draw along their outer edges.
To calculate, we use the well-known trigonometric formula:
H = L(D) × tg α
In order not to force the reader to look for tangent values and carry out independent calculations, a calculator is placed below that will allow you to perform the calculation in a matter of seconds. If desired, you can "play" with the values to find the best acceptable option.
Decking
Calculator for calculating the excess of the wall to ensure the required steepness of a pitched roof
The roof of any type is responsible for the safety of the building, the integrity of the walls and interior decoration of the building. It protects the house from the scorching heat in summer, from snowfalls in winter, heavy rains in the off-season, and also performs an important function in shaping the overall exterior of the building. Unlike broken, multi-level, hip and other modifications, a shed roof is reliable, economical and least expensive. This type is often used for outbuildings, verandas and garages. Despite the simplicity, the roof is made according to calculations and building codes in compliance with the rules and technologies for laying roofing material.
Advantages and disadvantages of a pitched roof
A shed roof, like any medal, has two sides: it has its own advantages and disadvantages. The construction of a roof of this type is characterized by simplicity and low cost, since you can mount it yourself without resorting to the services of a construction team and saving a certain amount on this.
Garage with a shed roof will reliably protect the car from snow and rain
So, pay attention to the main advantages:
- the design is based on a right-angled triangle - the “lightest” geometric figure, knowing the length of its sides, you can easily calculate the angle between them (in our case, this determines the angle of inclination of the slope);
- installation of a shed roof is intuitively simple and understandable;
- it will take several days to cover a typical "one-sided" roof; with certain skills and dexterity, such a roof can be laid even over the weekend.
In addition, design problems fade into the background and give way to solidity and reliability. It is imperative to foresee in what area the garage will be built, how much precipitation will fall on the roof. Now the disadvantages:
- insufficiently strong truss system will not be able to cope with a large mass of snow without problems. That is why in regions with severe winters it is preferable to use a gable roof;
- the second drawback will be the lack of a fully functional attic space, which significantly limits the ability to use additional space for temporarily unused materials or tools;
- the actual absence of the under-roof zone significantly complicates or almost completely negates the laying of high-quality thermal insulation. It is hardly possible to insulate a roof whose slope angle is 9 o - 12 o.
Calculation of the slope of a shed roof, depending on the choice of roofing material
If preference is given to a single-pitched structure, pay attention to the selection of roofing material. The angle of inclination of the roof will depend on this, which, in turn, is necessary for the unhindered convergence of snow, rain, ice from the slope:
- for rolled, bituminous, polymeric materials, the slope of the slope should not exceed 10 o. The minimum safe slope is not less than 6 o;
- for flat or corrugated slate, sheet iron with a seam connection, the maximum allowable angle of inclination is 20 °;
- if you use corrugated board, tiles, asbestos-cement and slate slabs, metal tiles as a roofing, you should not exceed the maximum allowable 25-30 o.
The angle of inclination of the slope will depend on the choice of the type of roofing material.
Shed roof design with drawings
When building a shed roof, pay attention to the design of the truss system and the selection of roofing material - the safety of operation and the ability to cope with loads depend on this. In rare cases, reinforced concrete slabs are used (provided that the angle of inclination is minimal). But mostly they use a rafter base made of wooden beams.
For the correct calculation, you need to know several parameters:
- the length and width of the bearing walls of the building;
- the angle of inclination and the desired length of the slope;
- type of material with which the roof is covered.
Based on the dimensions, it will become clear whether additional support posts are needed to reinforce the rafters. The angle of inclination will determine the need for additional construction of the gable and its height, as well as whether it is necessary to make an attic floor. According to fire safety standards, an attic with a height of less than 1.6 m is prohibited from being installed.
The roof truss system is calculated depending on the width of the slope
It is extremely important to determine the angle of inclination of the garage roof even at the design stage, since the height of the opposite sides of the box will depend on this and the advisability of using a cantilever frame on one of the sides to maintain the required slope.
Use wood only after it has dried thoroughly. Lumber for rafters should not have chips or other flaws at the joints. For long rafters, use glued beams. Boards are used only for light roofing surfaces.
Mauerlat - a reliable basis for a pitched roof
The rafter frame is a structure of planks or logs laid in parallel, resting on the base of opposite walls of different heights. Mauerlat performs a transitional function from walls to roof and is a link. If the walls of the garage are made of wood, which is unlikely in the age of new building technologies, there is no need for it. Brick (silicate and ceramic) is also a strong and durable building material in itself, so there is no need to lay Mauerlat on walls one brick thick. This will only add financial problems and unnecessary labor costs. In the case of a shed roof, the truss system can be installed directly on the strapping - this justifies itself when the slope is minimal and the coverage is not heavy. Installation of a tiled roof, asbestos-cement or slate requires the presence of a Mauerlat. It helps to evenly distribute the load of the wall around the entire perimeter of the building. You can’t do without a Mauerlat if the walls are driven out of gas silicate blocks or foam concrete. Such material is too fragile and loose - an anchor bolt or dowel is unlikely to hold in it.
How to fix the mauerlat on the walls of the garage
Mauerlat is laid on two opposite walls, on which the rafters will subsequently rest. So:
- Lay any waterproofing material on the ends of the walls. It can be roofing felt or bituminous tape.
- Lay the Mauerlat on top. To do this, use a beam measuring 50 * 150 mm or 100 * 150 mm, depending on the thickness of the walls of the building.
- Using anchor bolts or dowels, secure the tree to the base.
Such a uniform redistribution of the load is especially important for walls made of blocks, since they have less strength than, for example, brick.
In some cases, reinforcement tabs are used to fasten the truss system to the walls during forcing. With the help of steel wire, rafters are knitted to the reinforcement, traces of the strapping are hidden under the wall decoration inside the garage.
Reinforcing tabs are used to fasten rafters
Sometimes it is necessary to install a reinforced belt: special studs or trimmings of reinforced pipes are inserted into the upper masonry of the wall, onto which a Mauerlat beam is mounted. In addition to additional redistribution of the load, such a belt will allow you to adjust and fix the horizontal level as much as possible.
The technology of erecting a shed roof garage
Before starting construction work, you need to carry out small trigonometric calculations. With their help, they find the difference in heights of opposite walls, calculate the angle of inclination and the area of \u200b\u200bthe future roof. Most of the calculations can be done on your own, using familiar school formulas for finding the area, length and other parameters of different figures. The amount of necessary building materials depends on the calculations and, accordingly, the budget necessary to implement the idea is calculated.
The amount of necessary building materials depends on the calculations and the budget necessary to implement the idea is calculated
Having made the necessary calculations and purchased the material, you can start building the roof of the garage.
How to make a roof from a profiled sheet with your own hands
Consider an example of the execution of a shed roof made of corrugated board. Strength, lightness and rigidity favorably distinguishes it from modern building materials. The profiled sheet is made from a sheet of galvanized steel by cold rolling. For greater rigidity, it undergoes profiling during production, due to which ribs of a wavy or trapezoidal shape can be seen on the sheets. It is available in different thicknesses and the corresponding markings. For roofing, the most suitable profiled sheet is NS44 or NS35.
A roof made of corrugated board will reliably protect your car
To mount the roof, we need:
- wooden boards of the appropriate length and timber for Mauerlat;
- roofing material (in our case, corrugated board), covering the entire roof area, taking into account overlaps;
- woodworking tools: an ax, a circular saw, a hammer, a plane, a jointer, a screwdriver;
- tools for working on metal: grinder, rubber mallet, awl;
- fastening materials: a stapler with staples, nails, self-tapping screws or roofing screws with rubber gaskets;
- measuring and marking tools: tape measure, ruler, level, pencil, chalk.
After the garage frame is brought to a sufficient multi-level height, we proceed to the construction of the roof:
- We proceed to the installation of the Mauerlat (the laying technology is described above).
- We build a truss system and lay the crate.
- We lay the first rafter on the Mauerlat, going beyond the overhang by 40-50 cm, make a notch on it for fixing and use it as a template for subsequent boards.
- Using metal corners, self-tapping screws and a screwdriver, we fasten rafter boards over the entire roof area at equal distances.
The rafters are laid on the Mauerlat at equal distances
- We make a crate from the bottom up.
We lay the crate on the rafter system
- We lay roofing material or bituminous tape for waterproofing under the overhangs (for exterior decoration of the garage, you can sheathe it with siding or the same profiled sheet).
- Using a construction stapler, we mount a waterproofing film or a vapor-tight membrane, put a counter-lattice on top.
A counter-lattice is attached on top of the waterproofing
8. We lay the sheets from left to right, starting from the bottom row, with an overlap of 2 waves. If the height of the corrugation is not more than 2 cm, we fasten the self-tapping screw to the top of the rib. If it is higher than 2 cm, we fasten it to the base. Gaskets under the screws should not hang out, but they should not be pinched either - this will lead to subsequent roof leaks.
The order of laying the profiled sheet on the crate
When the roof is ready, the final necessary touch remains - the installation of a drainage system. The absence of low tides will eventually lead to wear of the foundation, damage to the basement and facade.
Low tides will protect the garage from the destruction of the foundation and basement
Video: fastening rafters for a pitched garage roof
Video: how to make a pitched roof with your own hands
If all the instructions for laying a shed roof for a garage have been followed, you will receive dry and reliable protection for your beloved car. A solid roof will protect the room from leaks and destruction. And you can do it yourself, but together with a partner it will be faster, more reliable and more fun. The more valuable such a building will be.
A reliable garage roof is an important condition for the safety of the building. Roofing in the garage is basically done in the same way as on other buildings, but there are some nuances.
Types of garage roofs
According to the design features, several types of roofs can be distinguished. By the presence of roof slopes there are:
- pitched;
- flat.
A flat roof needs to be equipped with a continuous elastic coating of polymer-bitumen materials that are resistant to temperature changes. The supporting parts for such a structure are the walls of the building. As a basis, screeds or plates can be used. In some cases, a hanging garden is made on a flat roof. In this case, the design will be operated.
A pitched roof is formed by bases, the angle of inclination of which can be from 10 to 60 °. The structures have an emphasis on the rafter mechanism. For the garage, you can build the following types of roofs:
- With one slope. The design has an emphasis on the walls of the building, and therefore one of the walls must be higher than the others in order to be able to create a slope. The height difference is calculated by the formula: H = tg α x s, where s is the width of the building, tg α is the tangent of the angle of inclination, the value of which can be calculated on a calculator or taken from the Bradis tables. The slope of the roof depends on the climate of the region: the amount of snow and the forces of constant wind.
Shed roof is formed by walls of different heights
- With two slopes. This option is most often used in the construction of garages, as it allows you to increase the useful area of \u200b\u200bthe building due to the attic space. A roof of this type can be made with or without overlap, however, it must be based on a Mauerlat - a horizontal strapping of bars that combines the rafter mechanism into a solid structure.
The gable roof increases the useful space of the garage due to the attic space
- Shed roof. It is rarely used for garages, however, in some cases it is used to maintain a uniform style of territory development. The rafter mechanism in this case will not have a ridge run, since the roof frame is formed by four identical slopes.
The hipped roof consists of four identical slopes
- Attic. This type of construction allows you to arrange an additional room above the garage building, which can be used by the owner for his own needs. For example, you can create a workshop, pantry, office or guest room. It differs from the attic in the height of the ceiling: at least 1.5 m. This roof project is considered expensive, since it needs steam, hydro and thermal insulation. You also need to install double-glazed windows of a non-standard shape. The rafter pair will have a sharp break, which may lead to a decrease in the strength of the building.
The minimum ceiling height in a room under a mansard roof is 1.5 m.
Materials and tools for manufacturing
Proper erection of a roof with a single slope implies compliance with the slope required for the unhindered descent of meltwater after rains or snowfalls. The height of the support parts must be different. The slope should be chosen taking into account the following factors:
- The climate of the region in which construction work is carried out. Sloping roofs with a slope of 5–7 ° are not practical in regions with a lot of snow. However, they are suitable for places where there is a strong wind. Roofs with a slope of 20–25° should not be made over separately located garage rooms in regions with moderate winds. Such structures can only be erected above attached buildings.
- Type of coating material:
- in the manufacture of roofs with a slope of 15 ° or less, it is necessary to use materials in rolls - polymer, polymer-bitumen or bitumen;
- if the slope is up to 10 °, then the roof should be arranged in 2 layers;
- at an angle of inclination of 17–20 °, sheets of metal, fastened with a fold, flat or wavy slate are used;
- for roofs with a slope of 25 ° or more, it is better to choose profiled sheets or metal tiles.
- Site design. Architectural features oblige to use a roof of the same color and shape throughout the territory.
When calculating the area of the slope, it is necessary to take into account the installation of overhangs that protect the structure from rain.
Overhangs are extensions of the roof structure that protect the building from rain and snow.
It is important to take into account such nuances:
- Above the log house there should be overhangs of 55–60 cm.
- The overhang over the iron sheathed frame structure should be at least 15–20 cm.
- The overhang over a concrete or brick building should be 35–40 cm.
In some cases, the size of the overhangs is made larger to form a canopy from the side of the entrance or along the wall. The canopy will need to be supported on support poles made on a separate or common base with the garage.
Garage roof material
The roof of the garage can be covered with different materials. You need to choose based on operating conditions and financial capabilities. For example, a building with a tile roof will cost much more than a building that is covered with slate. At the same time, laying metal tiles takes a lot of time. The most commonly used materials are:
- Ruberoid. This is a material based on dense or lightweight cardboard impregnated with bitumen. It is covered with refractory bitumen, after which minerals are added to it. Breaking load - 26–28 kg. One roll is enough to cover approximately 10 m2 of roof. Ruberoid can withstand heating up to 80 ° for two hours. The material can be used with a slope of at least 5 °. The rolled sheets are connected with an adhesive mixture or mastic in several layers or are welded with a gas burner. It is recommended to use roofing material if a garage with a roof of complex shape is made. The main advantages of the material:
- Bituminous tiles. This is an artificial soft material for roofing, which is based on fiberglass impregnated with rubber bitumen with a powder of basalt or slate. Service life - up to 50 years. The decorativeness of the coating is achieved due to a wide range of colors and cut shapes. The bituminous tile possesses all advantages of roofing material, however has more esthetic appearance. An additional advantage is the possibility of replacing individual fragments during repairs. The material can be installed on the roof with a minimum slope of 2°.
A roof made of bituminous tiles has a much more aesthetic appearance compared to a roofing material.
- Ondulin. This is a molded mass based on cellulose, bitumen, various pigments and fillers. After drying, sheets with waves become resistant to chemical attack. The advantages include low weight and low cost. The period of possible operation is up to 15 years. On sale can be found in the material of different colors. To fix the sheets, special fasteners should be used.
Ondulin is well suited for the roof of the garage, because it is a light and beautiful material.
- Slate. Represents sheets of asbestos cement with a surface in the form of waves. Despite not the most aesthetic appearance and hygroscopicity, it has quite a few advantages:
- Iron sheets. The material has a polymer coating and is strong and durable. The sheets are fastened in a folded manner into the lock, and therefore experience in carrying out these works and a special tool are required. Permissible slope - 19–30 °. It is desirable to apply an additional protective coating on a metal roof, which can be organized using acrylic paint.
- Decking. These are wave-shaped metal sheets that are overlapped in one wave on each side and attached to the crate with roofing screws, which greatly simplifies the installation process. The recommended tilt angle is from 8°.
You can cover the roof of the garage with a profiled sheet alone in a day
- Metal tile. It is one of the most popular roofing materials. By its properties, the metal tile is similar to corrugated board, but it looks much more attractive. The coating consists of profiled iron sheets with a thickness of about 0.5 mm with a smooth or rough surface, protected by a layer of polymer sputtering. Average service life - 30 years. The minimum slope is 14°.
The coating from afar resembles natural tiles, but is much cheaper
Garage Roof Tool
In order for the work to be done efficiently, you need to prepare the following tool:
- hammer;
- mallet made of wood;
- jack for lifting material onto the roof;
- roulette;
- level for measurements;
- spatula, if you plan to plaster and paint the garage;
- scissors for metal, if you plan to use corrugated board;
- saw;
- axe.
Some metal roofing materials will require hole preparation. In this case, a countersink and a countersink should be added to the list.
Do-it-yourself garage roof device
The roof for a garage building consists of the following elements:
- Rafter mechanism. It is used as a base on which all parts are fixed. The design will take on the total load of the roof.
The truss frame sets the shape of the roof and is its supporting part
- Lathing. Serves as a support for fastening the roofing.
The step of the lathing depends on the roofing material used.
- Materials for hydro, steam and thermal insulation. Required in order to retain heat and protect the building from moisture.
In order for the roof to retain heat and protect the garage from moisture, it is necessary to lay insulating materials in a certain sequence.
- Finish coating.
Laying the finish coating is the final stage of roof construction.
- Additional details to strengthen the truss mechanism.
If it is planned to build a garage with a shed roof, then a Mauerlat or logs must be placed on the upper end parts. The elements will be used as a support for the truss mechanism. They are fixed to the walls with wire through anchor bolts. Fasteners must be hammered into the wall or immured in masonry.
The main parts of the gable roof truss mechanism are the rafter legs. They can be:
- suspended (supported by extreme parts);
- layered (have intermediate parts for support).
If the span, which is formed by the supporting walls, has a length of less than 5 m, then only horizontal elements can be installed on the rafter frame. They are called crossbars. In places where the Mauerlat and rafter legs are attached, holes for fasteners must be prepared. The supports are installed in these holes and securely fixed with nails or anchor bolts.
Mauerlat installation
Laying the roof for the garage should begin with the installation of the Mauerlat. For this, a beam of 15x10 cm is used. If the walls of the garage are made of timber, then the upper crown can be used as a Mauerlat.
- For walls made of bricks or concrete blocks, a reinforcing belt is made. Steel studs are mounted in it, on which the Mauerlat will then be put on. The design of the armored belt is required not only for distributing loads from the roof, but also for horizontal alignment of the end surfaces of the walls. Without this element, the slope may be different in different parts of the roof.
Before pouring concrete, metal threaded studs are welded to the reinforcing cage so that their protruding part is several centimeters longer than the Mauerlat beam
- Concrete is poured into the formwork, its surface is finally leveled, and then the structure is covered with a layer of roofing material and left to dry completely (at least 7 days).
After leveling the concrete layer, the studs should come out of it to a height exceeding the thickness of the Mauerlat by 3-5 cm
- Mauerlat beams are mounted. Holes of the appropriate diameter are drilled at the locations of the studs, and the beams are put on the studs. Nuts are screwed on top.
After the mauerlat beam is laid on the armo-belt, it is fixed with the help of nuts that are wound on the ends of the studs
- The rafters are fixed to the Mauerlat. The simplest method is two nails with a length of 150 mm or more, located crosswise, or iron staples. For better fastening, you can use metal plates.
With the help of metal plates, it is possible to make a sliding fastening, which will allow the elements to move within small limits when the frame shrinks and seasonal deformations of the building
Rafter marking and framing
At this stage, you will need to mark the rafters:
Installation of rafters for a shed roof is not difficult. When installing a truss mechanism, one should be guided by the following principles:
As the base of the garage roof for covering material, a crate of planks or iron girders should be used. The crate is selected in this way:
The crate must be made from the bottom up.
Each rail should be attached to one nail to the rafter leg.
Garage roof insulation and waterproofing
External insulation of the garage roof should be carried out in the following sequence:
Internal roof insulation is performed in this way:
- First of all, a waterproofing layer is performed. Joints are sealed with adhesive tape.
It is better to lay the waterproofing film with a slight sag in order to avoid excessive stress during temperature deformations.
- If it is planned to use foam, then a crate must be made under it. Next, the sheets are fastened with self-tapping screws. In the process, it is necessary to glue the joints with an adhesive mixture.
- If mineral wool is used, then it fits into the gaps between the rafters by surprise.
Mineral wool slabs should go into the gaps between the lags by surprise and stay there without additional fastening
- The insulation material is covered with a vapor barrier film. The joints are glued with construction tape.
The vapor barrier film protects the insulation from warm, moist air coming out of the lower rooms.
Care should be taken that the insulation material does not come into contact with the waterproofing film. There must be a gap between them. To do this, a counter-breech of 30x40 or 50x50 mm bars is stuffed over the film. If a superdiffusion membrane is used for waterproofing, a ventilation gap device is not required.
Insulation of the roof inside can be done using penoizol.
Penoizol is applied to the roof by spraying
Foam material should be applied by spraying. It will penetrate into all gaps, expand when dried and be distributed throughout the base. As a result, there will be no gaps into which moisture or cold could penetrate. Penoizol is one of the best materials for insulation. It eliminates the appearance of fungus and mold. The only drawback is the high cost. However, it should be remembered that the period of possible use of the material is 70 years.
As a material for waterproofing shed roofs, bituminous mastic is most often used. The coating distributed over the roof surface is able to form a base with excellent waterproofing parameters. It is also allowed to use an anti-condensate film, which is made on the basis of viscose. This option is most often suitable for roofs that are covered with profiled sheets.
Waterproofing is carried out after the rafter system and the crate are completed, and the insulation is laid:
If the roof is not ventilated, then not an ordinary film should be used as a material for waterproofing, but with condensation protection. It is also possible to use a modern vapor-permeable membrane, which will remove excess water vapor to the outside. To facilitate the process of waterproofing, you can use self-melting roofing. However, it is important to ensure that the coating material does not overheat.
Video: garage roof waterproofing
Roofing installation
One of the most popular options is roofing made of roofing material.
Step by step guide to laying roofing material
The roofing material is mounted on a continuous crate. The material is able to perform two functions at once:
- protect the interior from precipitation;
- create a continuous budget coverage.
Ruberoid is a soft roll material for roofing, so it is easy to lay. To reliably protect the roof, the roofing material must be mounted in 2-3 layers. The first layer is applied as a lining, and the subsequent ones as a base coat.
In addition to roofing material, other roll-type materials can also be used. They are laid out on mastic or fused with a gas burner. The second method requires increased attention, because it is a fire hazard. Such work should be performed by a person with experience.
Video: roofing with bitumen and roofing felt
The sequence of installation of roofing corrugated board
The corrugated board has a small weight, so it is possible to save on the manufacture of the truss mechanism and the crate. Rafter legs can be made of bars 100x30, 50x30 or 50x50 mm. The choice must be made based on what load will be on the rafter mechanism. To create a high-quality roof, it needs to be insulated and laid material for waterproofing. Sequencing:
- Waterproofing is laid on the surface of the frame. In this case, the use of a 200 micron polyethylene film is allowed. The film is fixed to the crate using strips of small thickness with a section of 20x20 mm. The distance between the rails must be made such that the profiled sheet can fit snugly on the parts.
For laying a profiled sheet with a thickness of 0.4–0.5 mm, a lathing step of 50 cm is sufficient
- A metal roof is laid on top of the waterproofing material. Profiled sheets are fixed to the crate using special self-tapping screws with rubber linings. For convenience, you can pre-make small holes in the base. Self-tapping screws must be screwed in without interference so that the material can contract and expand with temperature changes.
Sheets of corrugated board are fastened with roofing screws into the recess of the wave
- The roof is insulated from the inside of the garage. The process of insulation under corrugated board is completely similar to that described above.
- On the inside of the roof, a vapor barrier film and a finishing coating of the walls and ceiling of the attic are mounted.
Video: self-covering the roof with profiled sheets
Features of laying seam and slate roofing
Laying a seam roof made of galvanized metal is possible only if you have certain skills and special devices. It is not recommended to do this on your own.
A slate roof can last over 40 years. The material is laid in the same way as the corrugated board, but the slate has a lot of weight. Accordingly, he needs a strong and reliable truss mechanism. Rafters should be made of wooden bars with a section of at least 100x80 mm.
Video: slate roofing
Garage roof operation and maintenance
Soft coatings are quite durable, but regular inspection of the substrate is recommended. Signs that indicate the need for repair:
- Various mechanical damages: through abrasion, deep crack, burst hole.
- The appearance of depressions in which water or dirt can stagnate.
- Change in the appearance of the coating: the appearance of moss, mold or fungus.
- The occurrence of emergency bundles at the joints.
If these signs are present, it is recommended that the roof be repaired immediately. Experienced experts recommend garage owners to perform regular structural maintenance at least once every 3 years. In this case, it will be enough to eliminate minor flaws. If the roof will be in a neglected state for a long time, then a complete replacement of the coating may be required.
Garage Roof Repair
The method of repair depends on the type of roof and the degree of wear of the building. In private buildings, where the garage is located separately from the building, low-cost roofing materials with a long service life are used. Garages in cooperatives cannot be covered with profiled sheets or shingles, so soft bitumen-based materials are used. There are 3 options for repairing a garage roof:
- With the help of heated bitumen.
- The use of soft material for the roof.
- The use of profiled sheets or tiles.
Before proceeding with the repair work, you will need to remove debris from the roof and clean the places that need to be repaired. If the previously installed coating material can be used, then it will be necessary to cut out recesses with an ax in places with defects. If the roof was covered with roofing felt, then the structure should be inspected for cracks or swelling. Such defects must be eliminated before repair work.
When the preparatory work is completed, you can start repair work:
Repairing a roof with roofing material is quite simple. You will need to cut out several pieces of material, and then close the recesses with their help. Each segment must correspond to the size of the recess. Sequencing:
Video: partial garage roof repair
It is quite possible to build a durable garage roof on your own, but it is important to follow the instructions and choose high-quality and reliable materials at all stages of work.
Each car enthusiast strives to equip a decent garage for his "iron horse", which will allow him to maintain an excellent appearance of the car and significantly increase its service life. In addition to strong walls, a reliable floor and well-executed ventilation, it is very important to have a properly designed and well-made garage roof. If you have the desire and knowledge of how to properly make the roof of the garage, then this type of work can be done independently. Let us consider in more detail the issues related to the construction of a roof for a garage.
Requirements for a quality garage roof
- Design reliability. The roof must be able to withstand temperature fluctuations and atmospheric loads appropriate for your climate zone. It should be borne in mind that the heavier the floor, the more powerful the walls must be in order to withstand this load.
- Good hydro and thermal insulation. To prevent moisture from precipitation on your car and create favorable conditions for its storage.
- Use of non-flammable materials. Garages are among the premises with an increased fire hazard, so it is extremely important to use non-combustible materials during their construction.
- Attractive appearance. Allows the garage to harmoniously fit into the overall appearance of the estate. Moreover, if the garage is adjacent to the house, then its roof should be made in the same style.
The main types of garage roofs
- Single-sided (flat). It is the simplest type of roof for a garage. It is characterized by a small amount of the required material. Most often, the slope angle is 20-30°, but if desired, the angle can be reduced to 10°, providing the required level of resistance to precipitation. The fastest way to manufacture this type of roof is to use floor slabs, which also have low thermal conductivity and a good level of sound insulation. This option best solves fire safety issues.
- Gable. With all the beauty of this design, it is more difficult to manufacture and expensive. Therefore, the choice of this option is made mainly for architectural reasons or in connection with the need for an attic space for storing various things. When building a gable roof, it is necessary to make a ceiling and insulate it. The very design of this type of roof contributes to its excellent view from the side, so you should not use cheap roofing materials so as not to spoil the overall impression of the structure.
Types of roofing materials
When building garage roofs, the following roofing materials are most common:
Slate. A fairly popular roofing material with a long service life (up to 40 years). It is made from lightweight asbestos-cement board with a high degree of wear resistance.
Compared to corrugated board, slate has more weight and requires a stronger and more reliable truss system.
Slate is laid in rows from the bottom up, followed by an overlap (about 20 cm). Fastening to the crate is carried out using special nails, while it is advisable to drill holes for them.
Ruberoid. The main advantage of rolled roofing material is its low cost, sufficient coating strength and effective protection against water. The service life of a roof made of roofing felt, with proper operation, reaches 15 years.
This roofing material is mounted on a continuous crate.
The first step is to prepare the base for the roof. Then, immediately before laying the first layer, it is necessary to smear the base with bituminous mastic, roll out and press the roofing material. Roofing material strips are mounted from the bottom up with an overlap of 20 cm. This laying method does not allow water to flow into the joints between the sheets. Further, in a similar way, only in a perpendicular direction, the second layer is laid. And finally, after smearing with bituminous mastic, it is necessary to lay the third layer, also in the direction perpendicular to the previous layer.
Decking. This material has gained popularity due to its long service life (up to 50 years) and low weight, which reduces the cost of building a truss system and manufacturing a crate. Decking is made of steel coated with a polymer coating or a layer of zinc (galvanized steel). Giving a characteristic trapezoidal profile is made by cold rolling. The dimensions of the sheet and the specific shape of the profile differ for different models. Installation of sheets is carried out with an overlap of about 20 cm, from bottom to top. The design of the sidewalls, edges and tops is performed using special profiles.
When creating a roof based on corrugated board, it must be waterproofed and insulated.
A properly designed and built garage roof will allow you to be sure that your car in the garage is not in danger of leaks and is well protected from the vagaries of the weather.
Video
Watch a video about installing a garage roof:
This is how the roofing of the garage with roofing material is correctly performed: